Secret Code Breaker

These pages contain small excerpts from the Secret Code Breaker series of publications. This series of cryptography publications for young readers provide detailed instructions explaining how to "crack" secret codes and ciphers for beginning cryptanalysts. Included are computer programs for code breaking and a series of coded secret messages actually sent by secret agents, spies and military commanders beginning with the Revolutionary War to the present including messages from the CIA "mole" Aldrich Ames to the KGB.